Valve mechanism for explosive-engines.



No. 706,932; E Patented Aug. 12, 1902.

' R. P. HANSEN.

VALVE MECHANISM FOR EXPLOSIVE ENGINES.

(Application filed vMay 4, 1899.)

(No Model.) I 2 Sheets-S hee.t I.

a a fl/ 1b &@ accent WVENTUR w/Tlvzssts 1 n4: NORRIS PETERS c0.PMOTD-LITHQ, WASHINGTON, n. c.

No. 706,932. Patented Aug. I2, I902.

R. P. HANSEN.

VALVE MEBHANISM FDR EXPLUSlVE ENGINES.

(Application filed May 4, 1899.) (R0 Model.) 2 Sheets-Sheet 2v INYENTORunuesses; I 7Z mM i t l 0 m: NORRIS mans co, mo-roumq, wasu'momu, u c

A TTOIINEYS UNITED STATES PATENT OFFICE.

RASMIIS P. HANSEN, on ERINDSLEV soon, DENMARK.

VALVE MECHANISM FOR EXPLOSlVE-ENGINES.

SPECIFICATION formingpart of Letters Patent No. 706,932, dated August12, 1902. Application tiled May 1899. Serial No. 715,671. (No model.)

To aZZ whom it may concern.-

Beit known that LRAsMUs PEDER HANSEN, asubject of the King of Denmark,and a resident of Erindslev .Sogn, Denmark, have invented certain newand useful Improvements in Valve Mechanism for Explosive-Engines, ofwhich the following is a specification.

My invention relates to a device for moving the valves and regulatingthefuel-feed in four-cycle gas and petroleum motors.

My invention is illustrated in the accompanying drawings, in which-Figure 1 is a front viewof the motor-cylinder with the valve-operatingmechanism with a partial section through the valvechamber, while Figs. 2and 3 illustrate two separate positions of the valve -'operatingmechanism and of the" regulator.

A is the motor-cylinder, which is closed above by a lid 0.

From the piston of the motor the movement is transmitted in the usualmanner by a sliding rod to the crank-shaft. (Not shown.)

On the crank-shaft is keyed an eccentric disk,

(not shown,) to the strap of which the one extremity of the rod on issecured. The other extremity of this rod 0, is connected with-the rod19, which is guided in N, and at the upper extremity of which is linkeda pivoted rod cl, which stands vertically in normal position and ispressed by a spring e-against astationary projection f. A buttonor knobg'is screwed fast on the valve-spindle 7z,.Flg. 3, said knob beingprovided with two notches g and g Fig. 2. A lever-bar I, having a notchL. on one arm, is pivoted on the stud t and is kept in normal positionby the spring Z against the projection 76.

m is another lever-arm pivoted around the stud m and having an arm mdirected vertically downward and also provided with a notch m, whichserves to catch the arm 2' on the lever-arm I. The lever-arm m is con-Iiected with the arm i of this lever by the springl. I

n is a projectionset on the head g of the valve-spindle, which actuatesthe lever-arm n, which moves the petroleum-pump 91 Fig. 1. I

The regulator 0, Figs. 2 and 3, is pivoted on the stud o and is weightedat the one arm by a Weight 0', while its other arm possesses a slanting,smooth, and reduced end 0 The regulator is held at its resting positionagainst the detent o by means of a spring 0 The pivot 0 is fixed on thearm 19, which carries besides the detentpin 0 another pin p Fig. 1, onwhich the spring 0 is fixed. The arm 19 is pivoted around the pin 19,Fig. 1, and is actuated by a projection on the rod 17.

A lever B pivots around the stud r, Fig. 3, and is pressed at itsrestingposition against the stop 7' by means of the spring a, Fig. 2. On theboss of this pivoted lever is a projection 7 which carries another smallpin for the purpose ofpressing against another spring 1", also arrangedon the boss of the lever. The lever R has a small notch 7", which liesopposite the pointed extremity 0 of the regulator-arm.

On the pin r,'but behind the-lever R, is a block 5, tapering upwardly,which carries a pin 5 for fastening the spring/r. Thepro jections f, k,and 1- the pivots 1 m and 1, and the spring r" are all secured to aplate M,

arranged on the cylinder A, Fig. 1, while the guide-bearing N for therod 1) and the petroleum-pump n are fixed on a plate arranged on theblock B.

In explanation of the operation of the arrangement the followingdescribes one of the working periods of the motor, which, as usual inthis kind of machines, comprises during two revolutions aiilux,compression, ignition, expansion, and eduction. The admissionvalve I,Fig. 1, acts automatically, and as its spring is weaker than the one ofthe eductionvalve it can be opened by the pressure of the atmosphereduring the downward stroke of the piston. The eccentric which moves theeduction-valve stands about ninety degrees ahead of the crank,(calculated according to the rotation direction.) When the piston ismoved downward, the eccentric has reached the lowest dead-point place atthe middle of the piston-stroke andwill thereafter move upward againduring the further downward stroke of the piston. When the piston movesup again after having'reached the lowest dead-center point, the rod 01,which is now also moved upward by the eccentric, must be prevented fromstriking against the head g,and thereby opening the eductionvalvc. Thisobject is obtained by the rod cl striking on the notch t" of the lever Iwhen the parts are in the position'shown in Fig. 1' and guiding thelatter into the position rep-- resented in Fig. 2, where it is held fastin the-lever m by the notch m. In the further operation of the machinethe explosion takes place at the uppermost dead-point and the expansiontakes place thereafter during the downward stroke of the piston. At themiddle of the expansion-stroke the eccentric is again at the lowestdead-point and thereafter proceeds upward. The length of the rods 61 andg is measured in such a manner that the rod dstrikesagainst the notch gin the head 9 at the moment when the piston is at the lowest dead-point.The head is raised again and lifts the rod g, and thereby theeductionvalve K, Fig. l, which now remains open during the whole ednotion-stroke. Simultaneously with the opening of the valve the rod 01presses upon the arm m of the lever m and raises the same upward, sothat the arm 11 is released, whereafter the lever 1 slides back duringthe-downward slide of the rod d and resumes the position shown in Fig. 1at the close of the exhaust-stroke. The working period is nowaccomplished. By the shoulder 'n and the rod 72 the piston of thepetroleum-pump receives a downward movement during the opening of theeduction-,

valve, so'that the petroleum is driven upward through the tube n into avaporizer arranged in the lid of the cylinder. Thepumppiston is guidedback by the spring 01 andsimultaneously sucks up petroleum. Theregulator actsin such a manner that when the speed of the machinebecomes too great it prevents entirely the induction of the fuel intothe cylinder. This is accomplished in the following manner: Theregulator-spring 0 is arranged in such a manner that the point 0 of theregulator-arm passes by the notch 1" of the lever B, Fig. 2, during theupstroke at normal operation. great, the weight 0", arranged on the onearm of the regulator, will tend in the upstroke to remain in itsoriginal position. Thereby the resistance of the spring is overcome andthe regulator is turned in such a manner thatits point 0 engages in thenotch r and raises the lever B. If this takes place during thecompression stroke, Fig. 2, which occurs but rarely, as the'speed of theengine is smaller at that period,'.the block 8 ispressed against thehead 9 by the shoulder r and spring 0", and as a consequence the springwill simply yield still more. Should this occur,however,during thelatter stroke.

When the speed becomes too the eduction-stroke, the block 8 will engagethe notch g and will press the head 9 upward whilethe Valve K is keptopen, Fig. 3. Instead of sucking up a charge the piston will now suck upthrough the opened eductionvalve K the combustion products expelled atAt the next eductionstroke the block 8 will be released. As thepetroleum-pump is moved by the spindle of the eduction-valve the spindleomits a pistonstroke every time that the machine skips an explosion.

I claim I 1. In at explosive-motor, the combination with the cylinder,the eduction and inlet valves, a rod operated from the crank-shaft ofthe motor making two rearward reciprocations to'each opening oftheeduction-valve, a petroleum-pump, an operating-lever therefor, a headcarried by the stem of the eduction-valve, means carried by the headcoact-v ing with the lever to operate the same as said head is raised,means carried by said rod for lifting said head, and speed-regulatin gmech anism operated by said reciprocating rod, adapted to coact withsaid head independent of said means carried by the rod, substantially asdescribed.

2.. The combination in an explosive-motor with the eduction-valve, andstem carrying the same, and a reciprocating rod, of a head secured tothe valve-stem, means carried by the reciprocating rod coactingtherewith to lift the same to open said valve, means for returning thevalve and speedregulating mechanism independent of the means carried bythe rod and operated from said rod also adapted to engage said head toprevent the return of the valve,su.bstantially as described.

3. The combination in an explosive-motor, with the eduction-valve andstem carrying the same and the reciprocating rod ofva head carried bysaid stem, an arm oscillated by the rod, 2. governor-arm pivotedthereto, a second arm adapted to be engaged by the governorarm wherebythe same is tilted on one stroke of the piston-rod, and a blockyieldingly connected to said arm adapted to coact with the head on thevalve-stem, substantially as described.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

V y 'R. P.IIANSEN.'

Witnesses: I

DANIEL SMITH, W. G. RoonER.

